its because the man who make the science
short answer: pearl harbor.
They hated them they wanted them to leave Britain
Francisco Franco was a general and the leader of the Nationalist forces that overthrew the Spanish democratic republic in the Spanish Civil War (1936–39); thereafter he was the head of the government of Spain until 1973 and the head of state until his death in 1975.
There are several pieces of evidence that exist that show that Indus Valley civilizations traded with Sumer, but the most significant is in the layers of stone under the ground.